Bedspring construction



Feb. 16, SCHWARTZMAN I BEDSPRING CONSTRUCTION Filed Nov. 21, 1935 2 Sheets-Sheet 1 INVENTOR. 9 JZrco hwar-Iz m n b zw wzmc- A TTORNEYS.

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'BEDSPRING CONSTRUCTION Filed Nov. 21, 1935 2 Sheets-Sheet 2 Fl g V INVENTOR.

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Patented Feb. 16, 1937 BEDSPRING CONSTRUCTION Jacob Schwartzman, Brooklyn, N. Y., assignor to Samuel E. Schwartzman, Brooklyn, N. Y.

Application November 21, 1935, Serial No. 50,849

6 Claims.

The invention relates to bed springs and has for its main object to provide a bed spring consisting of a main frame, which is adapted to rest on the bed stead in which used, and one or more secondary frames hinged to the main frame so that it or they maybe raised to vertical positions for convenience in cleaning and dusting. Another objectis to counterbalance the movable frames that they will automatically swing to the vertical position when the latching mechanism, which secured them in the normal position on the main frame, is released.

Still another object is to provide a bed spring of light but strong construction and in which the load placed on the top of the bed spring will be distributed to all the springs through a series of interlocking straps. A further object is to so construct the interlocking straps that all danger of the spiral springs used in the assembly being tilted or displaced, even under the heaviest load,

is removed. A still further object is to provide a bed spring in which all the parts coming in contact with the user are resiliently mounted in relation to either of the frames.

Additional objects are to provide a bed spring very light in weight, of pleasant appearance, easy to handle and manipulate, and which can be manufactured at a comparatively low cost.

These and various other objects and advan- 39 tages will be readily understood from the following description and from the accompanying drawings of a preferred embodiment of the invention, in which, however, various modifications may be made Without departing from the scope of the appended claims. In the drawings Fig. 1 is a plan view of the bed spring;

Fig. 2 a side view of same;

Figs. 3 and 4 show various, enlarged, fragmental views of certain details of the bed spring;

Figs. 5 and 6 show fragmental views of the straps used for connecting the top convolutions of the spiral springs;

Fig. '7 is a plan view of the bottom part of the secondary frame of the bed spring;

45 Figs. 8 and 9 show fragmental views of certain details of the construction;

Figs. 10, 11 and 12 show views of various details of the straps employed for holding the bottom convolutions of the spiral springs; and

so Figs. 13, 14 and 15 show various other details employed in the construction of the bed spring.

Reference is now made to Figs. 1 and 2 in which the main frame is shown at I 0 and the secondary frame at II.

55 gether at l2. The ends l3 of the main frame are These two frames are hinged tocurved upwardly to support the cross members I4. A plurality of spiral springs l5 are contained in these cross members and supported on downwardly-extending brackets l6 which are secured to the cross members. Straps ll are secured to the top convolutions of the spiral springs and one end of each of these straps is secured to the cross members by means of helical springs l8, while the other ends of the strap are connected to a helical spring I9 which extends from one side of the cross member to the other. A cross strap is also secured across the spiral springs and connected at the ends, by means of helical springs, to the sides of the member 14.

The ends 2| and 22 of the secondary frame are bent upwardly and, as previously said, the upper end 22 is pivoted to the end member M at [2. A plurality of spiral springs 23 are contained in the secondary frame. The lower end of all of these spiral springs are supported, as shown in Fig. 7, on a plurality of straps 24 and 25 secured, by means of helical springs 26, to a frame 21. The upper convolutions of these springs are held together by means of straps 28 and 28 The construction of these straps, as Well as of the straps 24 and 25, will be described later.

The ends of. all the straps 28 and 28 running crosswise on the frame, are secured to a pair of helical springs 29 and '30 secured on opposite sides of and lengthwise with the secondary frame, while the straps crossing the first mentioned straps are secured to helical springs 3| and 32, also connected to the end of the secondary frame, but crosswise with the frame.

Reference is now particularly made to Figs. 2

and 3, in which the manner in which the secondary frame is counterbalanced is illustrated. A support 33 is secured to the frame l0 and on this support a bell-crank 34 is rotatingly mounted. A lever 35 is pivoted at 36 to the end member l4 and the lower end of this lever is connected by means of a link 31 to the bell-crank. Another lever 38 is pivoted to the secondary frame at 39 and connected to the lever 35 and link 31 at 40. A tension spring 4! is stretched between a pin mounted on the frame M and a pin 42 inserted in the end of the bell crank.

In Fig. 2, the secondary frame is shown in its normal position with the spring ll stretched,

while in Fig. 3, the secondary frame is shown swung into its vertical position with the spring 4| contracted. To hold the secondary frame in its normal position, the latch 43 shown in Figs. 2 and 4 is employed. This latch is riveted to the end 2! of the secondary frame and consists of a piece of fiat steel spring, the bent-over end 44 of which enters into an opening 45 formed in the end 2| and abut against the end member l4. One of these latches is employed on each side of the frame. To swing the secondary frame to its vertical position it is only necessary to press in the latches until they clear the end members l4, after which the counterbalancing mechanism, just described, lifts the frame. When the secondary frame is in its normal position the free end rests on a resilient stop 46 which is secured to the frame ID. The members 2| and 22 of the secondary frame II are held together by spacing members 47 and 48, as shown in Fig 4. A bottom view of the counterbalancing mechanism, taken on line 99, is shown in Fig. 9.

Reference is now particularly made to Figs. '7 and 8. As previously stated the bottom convolutions of the spiral springs 23 are supported by and held together by straps 24 and and these straps are secured to the frame 2! by means of helical springs 26. The frame 2'! is slightly smaller than the bottom of the secondary frame so that it fits inside of this. Z-shaped supporting members 49 are secured to the frame 21 and the upper end 59 of these members extends in over the secondary frame, as plainly shown in Fig. 8. Compression springs 5| are inserted under the ends of the parts 50, so as to tend to resiliently support the frame 21.

As the widths of different bed steads vary considerably, I provide the supporting members 52, shown in Figs. 2, 3 and 15. These members consist of arcuated levers which are pivoted at 53 to the main frame I0. Slots 54 are cut in the frame so that the supporting members may be swung through these slots. The ends of the members rest on the side rails 55 of a bed stead, as shown in Fig. 15. By moving the member to the dotted position indicated at 54 it may be extended so as to reach the side rails when these are spaced farther apart.

To prevent the spiral springs 29 and from being drawn towards each other when a load is placed on top of the bed spring, a fiat bar 51 is inserted in these helical springs as illustrated in Figs. 13 and 14. The ends of these bars are connected to the ends of the secondary frame by 'means of tension springs 58.

The construction of the straps 28 and 28 will now be described and reference is made to Figs. 5 and 6. The straps 28 are offset as plainly shown in Fig. 5, so that the top convolutions of the springs 23 are contained in the offsets. A downwardly-extending socket 59 is formed between the convolutions. Slots 60 are punched across each of these sockets and lengthwise with the straps, as plainly shown in Fig. 6. Through these slots a tie strap 6| is threaded. These tie straps are passed below the top convolutions of the spiral springs and on top of the cross straps 28 as plainly shown. It will be seen that the tie straps 6| lock the convolutions to the strap as well as lock the cross straps 28 to the strap 28.

The straps 24 and 25 on which the bottom convolutions of the spiral springs 23 rest, are illustrated in detail in Figs. 10, 11 and 12. Each of the straps 24 and 25 is formed with upwardly extending sockets 6| and these sockets are inserted upwardly through openings 62 formed in a plate 63 on which the bottom convolutions of the spiral springs actually rest; the wire of the bottom convolutions being threaded through these sockets, as plainly shown in Fig. 10.

While I have shown and described one secondary frame mounted in the main frame, it is evident that two short secondary frames might be used, each having one end hinged to the cross members I 4 so that their free ends would open in the center.

Having described the invention and its objects, what I claim as new and wish to protect by Letters Patent is:

1. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; the corner members of one end of the secondary frame hinged to the inwardly-ex tending side members of the main frame so that the secondary frame may be opened upwardly from the main frame; a plurality of upholstery springs mounted in the secondary frame; and all of said springs secured to the secondary frame by resilient means so as to make the whole upper surface of the bed spring resilient.

2. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; the corner members of one end of the secondary frame hinged to the inwardlyextending side members of the main frame so that the secondary frame may be opened upwardly from the main frame; a plurality of upholstery springs mounted in the secondary frame and between the inwardly-extending side members of the main frame; and all of said springs secured to the frames by resilient means so as to make the whole upper surface of the bed spring resilient.

3. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; the corner members of one end of the secondary frame hinged to the inwardlyextending side members of the main frame so that the secondary frame may be opened upwardly from the main frame; a plurality of upholstery springs mounted in the secondary frame; all of said springs secured to the secondary frame by resilient means so as to make the whole upper surface of the bed spring resilient; and means for counterbalancing the weight of the secondary frame.

4. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; the corner members of one end of the secondary frame hinged to the inwardlyextending side members of the main frame so that the secondary frame may be opened upwardly from the main frame; a plurality of upholstery springs mounted in the secondary frame; all of said springs secured to the secondary frame by resilient means so as to make the whole upper surface of the bed spring resilient; a latch mechanism for holding the secondary frame in its normal position; and automatic means for raising the secondary frame when the latch mechanism is released.

5. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; helical springs under tension connecting all of said corner members; the corner members of one end of the secondary frame hinged to the inwardly-extending side members of the main frame; a plurality of upholstery springs mounted in the secondary frame; and all of said springs secured to the secondary frame by resilient means so as to make the whole upper surface of the bed spring resilient.

6. A bed spring of the class described comprising a main frame adapted to rest on a bed stead and having upwardly-extending ends terminating in relatively short inwardly-extending side members; a secondary frame formed of a rectangular base having upwardly-extending corner members; helical springs under tension connecting all of said corner members; rigid members inserted inside of the helical springs on both sides of the secondary frame and connected to the corner members by resilient means; the corner members of one end of the secondary frame hinged to the inwardly-extending side members of the main frame so that the secondary frame may be opened upwardly from the main frame; a plurality of upholstery springs mounted in the secondary frame; and all of said springs secured to the secondary frame by resilient means so as to make the whole upper surface of the bed spring resilient.

JACOB SCHWARTZMAN. 

